-3(2z-7)=-6z+21

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Solution for -3(2z-7)=-6z+21 equation: 


Simplifying
-3(2z + -7) = -6z + 21

Reorder the terms:
-3(-7 + 2z) = -6z + 21
(-7 * -3 + 2z * -3) = -6z + 21
(21 + -6z) = -6z + 21

Reorder the terms:
21 + -6z = 21 + -6z

Add '-21' to each side of the equation.
21 + -21 + -6z = 21 + -21 + -6z

Combine like terms: 21 + -21 = 0
0 + -6z = 21 + -21 + -6z
-6z = 21 + -21 + -6z

Combine like terms: 21 + -21 = 0
-6z = 0 + -6z
-6z = -6z

Add '6z' to each side of the equation.
-6z + 6z = -6z + 6z

Combine like terms: -6z + 6z = 0
0 = -6z + 6z

Combine like terms: -6z + 6z = 0
0 = 0

Solving
0 = 0

Couldn't find a variable to solve for.

This equation is an identity, all real numbers are solutions.

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